<template>
  <div class="login-wrapper">
    <a-form
      ref="formRef"
      :model="form"
      :rules="rules"
      class="login-form ele-bg-white"
    >
      <h4>忘记密码</h4>
      <a-form-item name="phone">
        <a-input
          placeholder="请输入绑定手机号"
          v-model:value="form.phone"
          allow-clear
          size="large"
        >
          <template #prefix>
            <mobile-outlined />
          </template>
        </a-input>
      </a-form-item>
      <a-form-item name="password">
        <a-input-password
          placeholder="请输入新的登录密码"
          v-model:value="form.password"
          size="large"
        >
          <template #prefix>
            <lock-outlined />
          </template>
        </a-input-password>
      </a-form-item>
      <a-form-item name="password2">
        <a-input-password
          placeholder="请再次输入登录密码"
          v-model:value="form.password2"
          size="large"
        >
          <template #prefix>
            <key-outlined />
          </template>
        </a-input-password>
      </a-form-item>
      <a-form-item name="code">
        <div class="login-input-group">
          <a-input
            placeholder="请输入验证码"
            v-model:value="form.code"
            allow-clear
            size="large"
          >
            <template #prefix>
              <safety-certificate-outlined />
            </template>
          </a-input>
          <a-button
            class="login-captcha"
            :disabled="!!countdownTime"
            @click="openImgCodeModal"
          >
            <span v-if="!countdownTime">发送验证码</span>
            <span v-else>已发送 {{ countdownTime }} s</span>
          </a-button>
        </div>
      </a-form-item>
      <a-form-item>
        <router-link
          to="/login"
          class="ele-pull-right"
          style="line-height: 22px"
        >
          返回登录
        </router-link>
      </a-form-item>
      <a-form-item>
        <a-button
          block
          size="large"
          type="primary"
          :loading="loading"
          @click="submit"
        >
          修改密码
        </a-button>
      </a-form-item>
    </a-form>
    <div class="login-copyright">
      copyright © 2022 eleadmin.com all rights reserved.
    </div>
  </div>
  <!-- 编辑弹窗 -->
  <a-modal
    :width="340"
    :footer="null"
    title="发送验证码"
    v-model:visible="visible"
  >
    <div class="login-input-group" style="margin-bottom: 16px">
      <a-input
        v-model:value="imgCode"
        placeholder="请输入图形验证码"
        allow-clear
        size="large"
      />
      <a-button class="login-captcha">
        <img alt="" :src="captcha" @click="changeImgCode" />
      </a-button>
    </div>
    <a-button
      block
      size="large"
      type="primary"
      :loading="codeLoading"
      @click="sendCode"
    >
      立即发送
    </a-button>
  </a-modal>
</template>

<script setup>
  import { ref, reactive, onBeforeUnmount } from 'vue';
  import { useRouter } from 'vue-router';
  import { message } from 'ant-design-vue/es';
  import {
    MobileOutlined,
    LockOutlined,
    KeyOutlined,
    SafetyCertificateOutlined
  } from '@ant-design/icons-vue';

  const { push } = useRouter();

  //
  const formRef = ref(null);

  // 加载状态
  const loading = ref(false);

  // 表单数据
  const form = reactive({
    phone: '1234567890',
    password: '',
    password2: '',
    code: ''
  });

  // 表单验证规则
  const rules = reactive({
    phone: [
      {
        required: true,
        message: '请输入绑定手机号',
        type: 'string',
        trigger: 'blur'
      }
    ],
    password: [
      {
        required: true,
        message: '请输入新的登录密码',
        type: 'string',
        trigger: 'blur'
      }
    ],
    password2: [
      {
        required: true,
        validator: async (_rule, value) => {
          if (!value) {
            return Promise.reject('请再次输入新密码');
          }
          if (value !== form.password) {
            return Promise.reject('两次输入密码不一致');
          }
          return Promise.resolve();
        },
        trigger: 'blur'
      }
    ],
    code: [
      {
        required: true,
        message: '请输入验证码',
        type: 'string',
        trigger: 'blur'
      }
    ]
  });

  // 是否显示图形验证码弹窗
  const visible = ref(false);

  // 图形验证码
  const imgCode = ref('');

  // 发送验证码按钮loading
  const codeLoading = ref(false);

  // 验证码倒计时时间
  const countdownTime = ref(0);

  // 图形验证码地址
  const captcha = ref('https://eleadmin.com/assets/captcha?v=');

  // 验证码倒计时定时器
  let countdownTimer = null;

  /* 提交 */
  const submit = () => {
    if (!formRef.value) {
      return;
    }
    formRef.value
      .validate()
      .then(() => {
        loading.value = true;
        setTimeout(() => {
          message.success('密码修改成功');
          push('/login');
        }, 1000);
      })
      .catch(() => {});
  };

  /* 更换图形验证码 */
  const changeImgCode = () => {
    // 这里演示的验证码是后端地址直接是图片的形式, 如果后端返回base64格式请参考登录页面
    captcha.value = captcha.value.replace(/v=.*/, 'v=' + new Date().getTime());
  };

  /* 显示发送短信验证码弹窗 */
  const openImgCodeModal = () => {
    if (!form.phone) {
      message.error('请输入手机号码');
      return;
    }
    imgCode.value = '';
    changeImgCode();
    visible.value = true;
  };

  /* 发送短信验证码 */
  const sendCode = () => {
    if (!imgCode.value) {
      message.error('请输入图形验证码');
      return;
    }
    codeLoading.value = true;
    setTimeout(() => {
      message.success('短信验证码发送成功, 请注意查收!');
      visible.value = false;
      codeLoading.value = false;
      countdownTime.value = 30;
      // 开始对按钮进行倒计时
      countdownTimer = window.setInterval(() => {
        if (countdownTime.value <= 1) {
          countdownTimer && clearInterval(countdownTimer);
          countdownTimer = null;
        }
        countdownTime.value--;
      }, 1000);
    }, 1000);
  };

  onBeforeUnmount(() => {
    countdownTimer && clearInterval(countdownTimer);
  });
</script>

<style lang="less" scoped>
  /* 背景 */
  .login-wrapper {
    padding: 48px 16px 0 16px;
    position: relative;
    box-sizing: border-box;
    background-image: url('@/assets/bg-login.jpg');
    background-repeat: no-repeat;
    background-size: cover;
    min-height: 100vh;

    &:before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: rgba(0, 0, 0, 0.2);
    }
  }

  /* 卡片 */
  .login-form {
    width: 360px;
    margin: 0 auto;
    max-width: 100%;
    padding: 0 28px 16px 28px;
    box-sizing: border-box;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.15);
    border-radius: 2px;
    position: relative;
    z-index: 2;

    h4 {
      padding: 22px 0;
      text-align: center;
    }
  }

  .login-form-right .login-form {
    margin: 0 15% 0 auto;
  }

  .login-form-left .login-form {
    margin: 0 auto 0 15%;
  }

  /* 验证码 */
  .login-input-group {
    display: flex;
    align-items: center;

    :deep(.ant-input-affix-wrapper) {
      flex: 1;
    }

    .login-captcha {
      width: 102px;
      height: 40px;
      margin-left: 10px;
      padding: 0;

      & > img {
        width: 100%;
        height: 100%;
      }
    }
  }

  /* 第三方登录图标 */
  .login-oauth-icon {
    color: #fff;
    padding: 5px;
    margin: 0 12px;
    font-size: 18px;
    border-radius: 50%;
    cursor: pointer;
  }

  /* 底部版权 */
  .login-copyright {
    color: #eee;
    text-align: center;
    padding: 48px 0 22px 0;
    position: relative;
    z-index: 1;
  }

  /* 响应式 */
  @media screen and (min-height: 640px) {
    .login-wrapper {
      padding-top: 0;
    }

    .login-form {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translateX(-50%);
      margin-top: -230px;
    }

    .login-form-right .login-form,
    .login-form-left .login-form {
      left: auto;
      right: 15%;
      transform: translateX(0);
      margin: -230px auto auto auto;
    }

    .login-form-left .login-form {
      right: auto;
      left: 15%;
    }

    .login-copyright {
      position: absolute;
      left: 0;
      right: 0;
      bottom: 0;
    }
  }

  @media screen and (max-width: 768px) {
    .login-form-right .login-form,
    .login-form-left .login-form {
      left: 50%;
      right: auto;
      margin-left: 0;
      margin-right: auto;
      transform: translateX(-50%);
    }
  }
</style>
